Added software timers

Accessory state machine framework functional

source/sys_chk.c

@@ -142,7 +142,7 @@ void Check_For_Open_Circuit(void)
 
 	if (Compare_Voltage(sys.adc.V_CHK, MAX_OP_VOLTS)) //Potentially fatal voltage
 	{
-		Select_Estop(ON);			// Fault condition disable output
+		Select_Estop(ISOLATED);			// Fault condition disable output
 		Select_Bypass(OFF);					// Force into blocked state.
 		Task = SAFETY_TASK;
 	}